Systems Pathology Exam 1 Practice

What is the role of insulinoma?

It raises blood glucose by increasing insulin secretion It secretes glucagon to raise glucose It produces hypoglycemia It has no effect on glucose homeostasis

Correct Answer:

It produces hypoglycemia

Explanation:

Insulinoma is a pancreatic beta‑cell tumor that secretes insulin autonomously. Excess insulin lowers blood glucose by promoting glucose uptake into muscle and fat and by inhibiting hepatic glucose production, so it causes hypoglycemia. That’s why producing hypoglycemia is the correct description of its role. It does not raise glucose by secreting insulin, it does not secrete glucagon, and it does affect glucose homeostasis.

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